Line data    Source code

       1             : /*
       2             :    This file is part of TALER
       3             :    Copyright (C) 2022, 2024 Taler Systems SA
       4             : 
       5             :    TALER is free software; you can redistribute it and/or modify it under the
       6             :    terms of the GNU General Public License as published by the Free Software
       7             :    Foundation; either version 3, or (at your option) any later version.
       8             : 
       9             :    TALER is distributed in the hope that it will be useful, but WITHOUT ANY
      10             :    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
      11             :    A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
      12             : 
      13             :    You should have received a copy of the GNU General Public License along with
      14             :    TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
      15             :  */
      16             : /**
      17             :  * @file exchangedb/pg_insert_reserve_closed.c
      18             :  * @brief Implementation of the insert_reserve_closed function for Postgres
      19             :  * @author Christian Grothoff
      20             :  */
      21             : #include "platform.h"
      22             : #include "taler_error_codes.h"
      23             : #include "taler_dbevents.h"
      24             : #include "taler_pq_lib.h"
      25             : #include "pg_insert_reserve_closed.h"
      26             : #include "pg_helper.h"
      27             : #include "pg_reserves_get.h"
      28             : #include "pg_reserves_update.h"
      29             : 
      30             : enum GNUNET_DB_QueryStatus
      31          11 : TEH_PG_insert_reserve_closed (
      32             :   void *cls,
      33             :   const struct TALER_ReservePublicKeyP *reserve_pub,
      34             :   struct GNUNET_TIME_Timestamp execution_date,
      35             :   const struct TALER_FullPayto receiver_account,
      36             :   const struct TALER_WireTransferIdentifierRawP *wtid,
      37             :   const struct TALER_Amount *amount_with_fee,
      38             :   const struct TALER_Amount *closing_fee,
      39             :   uint64_t close_request_row)
      40             : {
      41          11 :   struct PostgresClosure *pg = cls;
      42             :   struct TALER_EXCHANGEDB_Reserve reserve;
      43             :   enum GNUNET_DB_QueryStatus qs;
      44             :   struct TALER_FullPaytoHashP h_payto;
      45             : 
      46          11 :   TALER_full_payto_hash (receiver_account,
      47             :                          &h_payto);
      48             :   {
      49          11 :     struct GNUNET_PQ_QueryParam params[] = {
      50          11 :       GNUNET_PQ_query_param_auto_from_type (reserve_pub),
      51          11 :       GNUNET_PQ_query_param_timestamp (&execution_date),
      52          11 :       GNUNET_PQ_query_param_auto_from_type (wtid),
      53          11 :       GNUNET_PQ_query_param_auto_from_type (&h_payto),
      54          11 :       TALER_PQ_query_param_amount (pg->conn,
      55             :                                    amount_with_fee),
      56          11 :       TALER_PQ_query_param_amount (pg->conn,
      57             :                                    closing_fee),
      58          11 :       GNUNET_PQ_query_param_uint64 (&close_request_row),
      59             :       GNUNET_PQ_query_param_end
      60             :     };
      61             : 
      62          11 :     PREPARE (pg,
      63             :              "reserves_close_insert",
      64             :              "INSERT INTO reserves_close "
      65             :              "(reserve_pub"
      66             :              ",execution_date"
      67             :              ",wtid"
      68             :              ",wire_target_h_payto"
      69             :              ",amount"
      70             :              ",closing_fee"
      71             :              ",close_request_row"
      72             :              ") VALUES ($1, $2, $3, $4, $5, $6, $7);");
      73             : 
      74          11 :     qs = GNUNET_PQ_eval_prepared_non_select (pg->conn,
      75             :                                              "reserves_close_insert",
      76             :                                              params);
      77             :   }
      78          11 :   if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT != qs)
      79           0 :     return qs;
      80             : 
      81             :   /* update reserve balance */
      82          11 :   reserve.pub = *reserve_pub;
      83          11 :   if (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT !=
      84          11 :       (qs = TEH_PG_reserves_get (cls,
      85             :                                  &reserve)))
      86             :   {
      87             :     /* Existence should have been checked before we got here... */
      88           0 :     GNUNET_break (GNUNET_DB_STATUS_SOFT_ERROR == qs);
      89           0 :     if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs)
      90           0 :       qs = GNUNET_DB_STATUS_HARD_ERROR;
      91           0 :     return qs;
      92             :   }
      93             :   {
      94             :     enum TALER_AmountArithmeticResult ret;
      95             : 
      96          11 :     ret = TALER_amount_subtract (&reserve.balance,
      97             :                                  &reserve.balance,
      98             :                                  amount_with_fee);
      99          11 :     if (ret < 0)
     100             :     {
     101             :       /* The reserve history was checked to make sure there is enough of a balance
     102             :          left before we tried this; however, concurrent operations may have changed
     103             :          the situation by now.  We should re-try the transaction.  */
     104           0 :       GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
     105             :                   "Closing of reserve `%s' refused due to balance mismatch. Retrying.\n",
     106             :                   TALER_B2S (reserve_pub));
     107           0 :       return GNUNET_DB_STATUS_HARD_ERROR;
     108             :     }
     109          11 :     GNUNET_break (TALER_AAR_RESULT_ZERO == ret);
     110             :   }
     111          11 :   return TEH_PG_reserves_update (cls,
     112             :                                  &reserve);
     113             : }